.roombg{
  background-color: black;
  height: 100vh;
  width: 100vw;
  color: white;
}

.chatroom{
  position: fixed;
  bottom: 300rpx;
  //  background: white;
  width: 50vw;
  height: 30vh;
  left: 0;
  overflow: hidden;
  
}

.roombottom{
  position: fixed;
  bottom: 20rpx;
  left: 0;
  width: 100vw;
  height: 100rpx;
}